Anthu ambiri samakhulupirira oyeretsa owuma, kuyesera kulimbana ndi mankhwala oipitsidwa amatsenga, kapena amagwiritsira ntchito mitundu yonse ya zamakina kunyumba. Nsalu yotchuka kwambiri yopangidwa ndi polyester, yomwe zinthu zambiri zimapangidwa. Zinthuzi zimadodometsa viscose, thonje kapena zinthu zina, kupeza nsalu yabwino komanso yamphamvu. Choncho, ndi zothandiza kuphunzira momwe mungasamalire zinthu kuchokera muzinthu izi, kaya zingatheke kutsuka makina. Ntchito yofunika pano ndi funso, kaya atatsuka polyester. Palibe amene akufuna kutaya chinthu chatsopano chotsatira pambuyo poyeretsa koyamba.
Kodi kusamba zinthu kuchokera polyester?
Polyester sopa mantha a madzi pa kutentha kwa 40 °, ndipo zinthu zambiri zikhoza kutsetseretsedwa m'madzi otentha (mpaka 60 °), koma kutentha sikuperekedwa. Musathamangire kukangokhalira kuponyera zinthu m'galimoto ndikuphatikizapo oyamba, mutenge maso a boma. Ndibwino kuti muyambe kuyang'ana chizindikirocho, chomwe chimasonyeza magawo onse ovomerezeka, omwe ndi othandiza kupanga mankhwala opangidwa kuchokera ku polyester. Powderani musankhe choyenera kupaka nsalu imene malaya amapangidwa. Ngati mukugwiritsa ntchito makina osakaniza, pangani njira yowoneka bwino. Mu centrifuge, ndizofunika kupotola zovala zotero kuti zisamaume, koma kuti ziume pang'ono.
Chinthu chofunika kwambiri pa nkhaniyi ndi chakuti polyester sakhala pansi ikasambitsidwa ndipo imauma mofulumira. Koma ngati mumayamwa, ndiye kuti n'zotheka kupanga makwinya. Sikoyenera kuti zitsulo zinthu zoterozo, koma ngati mutasankha kuyenda mu chitsulo, ndiye kuti ziyenera kuyendetsedwa bwino (mpaka 130 °), komanso kuti muzitsulola mu nsalu yonyowa.
Zinthu izi ndizopangidwa, koma zimakhala ngati thonje. Polyester sakhala ndi mantha ndi njenjete zakupha, dzuwa ndikumasamba kutsuka. Ngati mumagwiritsa bwino ntchito ndondomeko yotsuka chovala cha polyester, mungatsimikize kuti mitundu yowala pamaso anu kapena chovala chanu sichidzatha nthawi yaitali, idzakhala yowuma komanso pambuyo pa miyezi yambiri mutagula.